### Home > INT3 > Chapter 7 > Lesson 7.2.3 > Problem 7-82

7-82.

York County, Maine, is roughly triangular in shape. To help calculate its area, Sergio has decided to use a triangle to model the region, as shown at right. According to his map, the border with New Hampshire is

Find the height of the triangle.

Then use this to find the area of the triangle: